Edward's big struggle (3)

I believe the answer is:

war

I'm a little stuck... Click here to teach me more about this clue!

'struggle' is the definition.
(I know that war is a type of struggle)

'edward's big' is the wordplay.
'WAR' is hidden in amongst the letters.
But, I am uncertain how the hidden word is indicated.

Can you help me to learn more?

(Other definitions for war that I've seen before include "State of armed conflict" , "Battle" , "Hostile situation" , "series of engagements" , "Open hostility" .)

I've seen this clue in the Evening Standard.

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